GitLab

Remove the tracking/persisting of these metrics in prefs. Removed
uploading in uninstaller.

Bug: 1107516
Change-Id: I84499820cea86b5f785949d9274e8b2205714aae
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2308133Reviewed-by: Tommy Li <tommycli@chromium.org>
Reviewed-by: Nate Fischer <ntfschr@chromium.org>
Reviewed-by: Greg Thompson <grt@chromium.org>
Commit-Queue: Robert Kaplow <rkaplow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#825461}